Rail dkill



Sept. 21 1926.

J. TATTON RAIL DRILL Filed May 28, 1924 .Z-NVEN'TUR .Tos TATTON i? ATTURA IEy Patented Sept. 21, 19 26 rmwiinvrireb; joF' Slimmer-11in, CANADA; A" come-mem The eppara tusglconsists of ai'iEre-me, the

front LPGrtiOn of Wll'ldh supports in "ratchet driven 'l spindle and :the x'rear :pertion supports'tlre feed 'meclrenism.

- Suitable-meansiare iprcyided to secure the V mil 8,:heve-lugs 63,itorwhich-m'e :jdurn'a'lled zfranreflf nposit-r01 1; A special feature? is pawl ratchet'driyet Y y Y full detailed description and :Specifi'em den and :cleims is given Y'hereafterj [Refers nde"is{mecle:to 'the ialceompanying drawings "fie und in the idoulil'e 3, iswwyertical crOsssGtien-Eit 8%3 ed the drill spindle 2;

1 which eenn'e'cts :wi'thzboth standards 10 anc11 *tienmf the'hearingbushing-.12, which is' securely bylthe collar i120.-

'efirriesllt icnzink lever 41."

the jratchet @nd earries The "rear *st anderdflh lpr'ovides' bearings for the. internally threeded-sleeve 52,' wliieh is lheldvin place' by the icollarx520'.v

V The feedi screw 5,;meshing with itlreisleeve 52, terminates-in a" cup: 5'1'," Whichis fsecured t0 the guide-1016011122;

52, and is aoiperated' by :onewr niore 'paw'ls v A hasnd crank '53, on the vouterfen d of 'ith'e' "sleevel52gprovides rapid adjustment o'fl'the drill spindle" 2:

, .The fram'e onvfrent standard .1'O,"hes side" projections 101, withia'djustment screws 102,

to-beerpn-tlre innerifle'ngeref mil '8? AY-ypalr of clamp hers :6","1pr'0yi'ded" "with hooks 60, to embrace the outer flange of ike Wedg e shaped vslots 103-, 'adep t'ed.":toisecure V the erosslbdrfie i v r vl l v Bags 61;,iare?pr0videc1 0n the iclamp Ebars 6, adapted to grip the inneriflangerotf the rail 8, and sliding Wedges 62, c0If1pletethe mens ofIrigideadjustm'enti i a i While :the detail Construction :dfrthe retellet drive :may very ilfiheiy'eliprovid'ed amevel i form-Whichisrshown'inEiguTesaA, 5,26]? 1 l his consists :in 1': aifpentagonal ratchet 3, yvuth "rounded teeth meunted :on the bear: lngpbushin'g': :12, through :WhiCl'L the drill ;Above=zthe ratchetBethe-"pawlhleck I mounted 'en the": square lPbI'tl'OIl' :40,- .o:E lth'e fEeefd spindle k, yjournelled :in "the cesing :of the'zstandardiO." l :1 l. The upper jedge "Of the] easing has .atwo downwardly:inelinedfedges 100. f

The,.,p2u'wl block 31; dies wp'rej ectingaedge's 31 1, inclined upwardly adapted to ibearjon the edges 100, and limit the st'rekedf the 'p'awl blocl'z '3l operated by .thelever. 7; l

in thelOwer: edge of the {pawl block {31. The

pawl '32 has re icurved fjaw at its lend to embrace the. teeth :30,*a "coil sspring 320, in the lower edge ;(if ithe' pawl block; 31;, tends to 1- The. (pawl 33,':111a's reentrelqeurved jaw and an extension :thOPlQQgthfOffQIIG;i(le of ing p11 the fcasing "walL' y I a r ing igwybear follows. WVhen the pawl block isat the end of its stroke to the ri ht as shown in Fig. 6,

V the pawl 33, due to the tension of the spring {jaw drives the ratchet 3, until it is stopped V 330, grips the tooth of the ratchet 3.

The stroke to the left then begins and thepawl 33, drives the ratchet 3', until the central jaw "embraces the next tooth, see

Figure 4, continuing the stroke, the central by the edge 811, of the pawl block 3l,'meet-. ing the edge of the casing 100, at which stage the'jaw of'thepawl 32, grips.the next toothasseen in Figure 5.

During the entire stroke to the right the pawl 32,1drives the ratchet 3,till the posi- I tion-shown in Figure 6, is again reached.

The rail drill as above described is adjusted 111' position as shown in-Figure 1, by

hookingvthe clamps 6, underthe rail 8,to

the outer flange, the dogs 61 and the wedges 62 .are then .clamped on the inner flange;

' The cross bar 64, provides a guide for lat eral adjustment of the drill when itenters the slot 103. The set screws 102, secure the frame rigidly in-position to operate. v V.

The bit isinserted in the chuck 21, and .thelcrank' 53, brings it up to the web of the -:,-The feed pawl 55, is let down on the ratchet 54c, and the operator starts to Work ,the lever 7. 1 I j A Eachcomplete strokeofthelever 7, drives the feed ratchet one tooth-and'the sleeve feed rotates moving the advancing'the bit. y What I claim is 1. In a rail drill, the.

screw' forward and combination of. a

, 7 frame having frOntJandrear-*standzirds, a ratchet driven. drillspin'dle' journalled to carried in "a. guide block, athreadedfeed screw secured to the guide block extending rearw'ardly through an internally" threaded.

the front standard, a thrust 'bearing thereto sleeve in the rear standard,"'a crank to operate sleeve a ratchet drive to rotatesleeve,

' j with means toadjust the=f rame in position guideblock, .a threadedffeed s'crewsecured to the guideyblock; extending rearw'ardly I through an internally threadedsleeve in the rear standard, a crank to operate sleeve, a I jiatchet drive to rotate sleeve, with lmeans to adjust thefframein position on the side of a rail, having pivoted hooked clamp bars with sliding dogs,'adapted to passf un-r der; and lgrip the rail base;

3. In a rail drill the combination of aframe having front and rear standards. forward projectionsto base of front standard provided with adjustment screws adapted to bear on the rail flange, a ratchet driven drill sp ndle ourna'lled 1n the front standard, a thrust bearing thereto carried 1n a guide block, a threaded feed screw secured to the guide block extending rearwardly through an nternally threaded sleeve in the rear standard, a crank to operate sleeve, a ratchet drive to rotate sleeve,- with a rail clamp c omprising two hooked clamp bars with lugs pivoted to. a wedge shaped cross bar, having sliding dogs and wedges on theclamp bars,

adapted to pass under and grip the rail base. V 4l In airail drill the combination of 'adrill spindle, a chuck thereon, a thrust bearing thereto, a. ratchet-drive to operate thespine dle, a guide block supporting the thrust bearing,;a guide rail thereunder, with a" feed screw, a capped end thereto secured'to the guide block, an internally. threaded sleeve meshing with the feed-screvv,a ratchet drive thereto operated by the drill ratchetdrive, and a hand crankto operateithe sleeve.- I

5. In a rail drill the combination "of a drill spindle, a chuck thereon, athrust bearing-thereto; a bearing bushing mountedon the drill spindle, a ratchet securedto, the bearing bushing, apawl block adapted to be rocked by'a hand-lever, pawls pivoted to the pawl block adapted torotate the ratchet, a guide block supporting the thrustbearin-g a guide rail thereunder with a feed screw, a cupped end thereto-secured tothev guide block, an internally threaded sleeve meshing 'with the-feed screw, airatchet drive thereto operated bv the drill ratchet drive, anda hand crank to operate the sleeve;

6. In a rail drill the combination of drill spindle, achuck thereon, .a thrust bear? ing thereto, a ratchet. drive tOrOPGI'ELtG the spindle, a guide block supporting the thrust bearing, a guide rail thereunder, with a feed screw, a cupped end thereto 'secured to the guide .block, an. internally threaded sleeve meshing with the feed screw,.a ratchet-drive thereto comprising a ratchet secured to the sleeve, a feed spindle operated by the pawl block, .a crank lever on the endof-the feed spindle, a pawl pivoted to thecrank lever adapted to drive "the feed ratchet and a hand J crank to operate the sleeve, mounted; on a frame having front'and rear standards with adjustable hooked-clamp barspivotedtothe.

"front. standard and adapted to pass" under and grip the; rail base. p j V f .7. In a rail drill the combination of a drill :spin'dle, aJchuck thereon, a thrust bearing thereto, a bearing .bushing 'rnountedon the drill spindle, a ratchet secured to the. hearing bushing, a pawl block. adapted .to be rocked by a hand lever, pawls pivoted .[to the pawl block adapted to' rotate the ratchet, a guide block supporting the thrust hearing a guide rail thereunder, With a feed'screw, a cupped end thereto secured to the guide 5 block, an internally threaded sleeve meshing with the feed screw, a ratchet drive thereto comprising a ratchet secured to the sleeve, a

teed spindle operated by; the pawl block, a crank lever on the end ofthe 'teed spindle, a pawl pivoted to-thecrank lever adapted to 10 drive the feed ratchet and a handcrank to operate the sleeve.

JOB TATTON. I 

